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04-Aug 03 <br /> r------� <br /> 1y I Former I Former <br /> Building : Restrooms <br /> MW4 I---- - <br /> 24 28 <br /> (<0.50) <br /> (<Q 50) Former Product Former <br /> ' Piping Trench Dispenser <br /> (typ) <br /> Q / MW-5 <br /> r f ter_ i <br /> -2440 <br /> (<050) <br /> (<O 50) <br /> I F---- b <br /> ►—I ,� - ' ` Former- �� <br /> 1 <br /> ,Former <br /> ilding '\USTs <br /> I I I I y4 Y-'N <br /> --- I <br /> -2440--,24 <br /> 1 ` (<2 0) I II II <br /> `(<2 01 <br /> 1 <br /> MW-3I ------ n------------ ' <br /> 1 �i1ti� t��L ------- N syrl <br /> <0 02 \ ` MW-2 <br /> -24 37 <br /> E�<0 SO) V (<0.50) <br /> °s js & (8 7) <br /> Driveway Sidewalk Driveway <br /> EXPLANATION EAST CHARTER WAY <br /> Groundwater Monitoring Well <br /> Groundwater elevation contour in feet referenced to <br /> mean sea level (ft msl) Arrows indicate <br /> approximate groundwater flow direction <br /> -2402 Groundwater elevation in ft msl <br /> (<0.50) Benzene concentration in parts per billion(ppb) <br /> (<5 0) MTBE concentration in ppb <br /> <x Not detected at reporting limit x FIGURE <br /> Scale(ft) <br /> Approximate hydraulic gradient=0 006 <br /> Ll 0 15 30 60 2 <br /> Former Shell Service Station Groundwater Contour/Chemical <br /> 1313 East Charter Way Concentration Map <br /> Stockton, California <br /> C A M B R I A July 11, 2003 <br />